ImageQualityFactor Property

Summary

Gets or sets the degree of loss in the compression process for non-text areas.

Syntax

Objective-C

C++

Java

public int ImageQualityFactor {get; set;}

Public Property ImageQualityFactor As Integer

@property (nonatomic, assign) NSUInteger imageQualityFactor

public int getImageQualityFactor() 
public void setImageQualityFactor(int imageQualityFactor)

public: 
property int ImageQualityFactor { 
   int get(); 
   void set (    int ); 
}

Property Value

An integer value that determines the degree of loss in the compression process for non-text areas. The value of 0 means lossless while any other value means lossy. The default value is 0.

Example

using Leadtools; 
using Leadtools.Codecs; 
 
public void CodecsJbig2OptionsExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "ocr1.tif"); 
   RasterImage srcImage = codecs.Load(srcFileName); 
 
   // Save as JBIG2 with Template #3 
   codecs.Options.Jbig2.Save.RemoveMarker = true; 
   codecs.Options.Jbig2.Save.RemoveHeaderSegment = true; 
   codecs.Options.Jbig2.Save.RemoveEopSegment = true; 
   codecs.Options.Jbig2.Save.RemoveEofSegment = true; 
   codecs.Options.Jbig2.Save.ImageTypicalPredictionOn = true; 
   codecs.Options.Jbig2.Save.ImageTemplateType = 3; 
   codecs.Options.Jbig2.Save.ImageQualityFactor = 0; // Lossless image compression 
 
   codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "jbig2.jb2"), RasterImageFormat.Jbig2, 1); 
 
   // Clean up 
   srcImage.Dispose(); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
 
Public Sub CodecsJbig2OptionsExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") 
   Dim srcImage As RasterImage = codecs.Load(srcFileName) 
 
   ' Save as JBIG2 with Template #3 
   codecs.Options.Jbig2.Save.RemoveMarker = True 
   codecs.Options.Jbig2.Save.RemoveHeaderSegment = True 
   codecs.Options.Jbig2.Save.RemoveEopSegment = True 
   codecs.Options.Jbig2.Save.RemoveEofSegment = True 
   codecs.Options.Jbig2.Save.ImageTypicalPredictionOn = True 
   codecs.Options.Jbig2.Save.ImageTemplateType = 3 
   codecs.Options.Jbig2.Save.ImageQualityFactor = 0 ' Lossless image compression 
 
   codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "jbig2.jb2"), RasterImageFormat.Jbig2, 1) 
 
   ' Clean up 
   srcImage.Dispose() 
   codecs.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Examples; 
using Leadtools.ImageProcessing; 
 
public void CodecsJbig2OptionsExample(Stream inStream, Stream outStreamJbig2) 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   RasterImage srcImage = codecs.Load(inStream); 
 
   // Save as JBIG2 with Template #3 
   codecs.Options.Jbig2.Save.RemoveMarker = true; 
   codecs.Options.Jbig2.Save.RemoveHeaderSegment = true; 
   codecs.Options.Jbig2.Save.RemoveEopSegment = true; 
   codecs.Options.Jbig2.Save.RemoveEofSegment = true; 
   codecs.Options.Jbig2.Save.ImageTypicalPredictionOn = true; 
   codecs.Options.Jbig2.Save.ImageTemplateType = 3; 
   codecs.Options.Jbig2.Save.ImageQualityFactor = 0; // Lossless image compression 
 
   codecs.Save(srcImage, outStreamJbig2, RasterImageFormat.Jbig2, 1); 
 
   // Clean up 
   srcImage.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
 
Public Sub CodecsJbig2OptionsExample(ByVal inStream As Stream, ByVal outStreamJbig2 As Stream) 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   Dim srcImage As RasterImage = codecs.Load(inStream) 
 
   ' Save as JBIG2 with Template #3 
   codecs.Options.Jbig2.Save.RemoveMarker = True 
   codecs.Options.Jbig2.Save.RemoveHeaderSegment = True 
   codecs.Options.Jbig2.Save.RemoveEopSegment = True 
   codecs.Options.Jbig2.Save.RemoveEofSegment = True 
   codecs.Options.Jbig2.Save.ImageTypicalPredictionOn = True 
   codecs.Options.Jbig2.Save.ImageTemplateType = 3 
   codecs.Options.Jbig2.Save.ImageQualityFactor = 0 ' Lossless image compression 
 
   codecs.Save(srcImage, outStreamJbig2, RasterImageFormat.Jbig2, 1) 
 
   ' Clean up 
   srcImage.Dispose() 
End Sub

Requirements

Target Platforms

Reference

CodecsJbig2SaveOptions Class

CodecsJbig2SaveOptions Members

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Help Version 20.0.2020.4.3

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies